Hallj



Be `it known that LWILLIAM e A. LIGHT- HALL, of the city, county, and State of New York, have invented a` certain new and im-` proved arrangementfor `inreasing the circulation l of cooling-Water through refrigerators or condensers of marine steam-engines; and I do hereby declare" that the following is a full f and exact description of the same, reference being had to theaccompanying drawings', and

to the letters of reference marked thereon,`in

" Figure 1 is averticahand longitudinal sec-` `tion taken through" thejline m mplig; 2; and `Eig.`2 is a plan view with the rear end broken i away'horizontally on theline ajliigfl. e 1 Myinvention is 1 designed to beappliedto `refrigerators for cooling i, the inj ection-water of condensing-engines to be reused in the condenser,` and to condensers for condensing the ,where the supply of coolingfwater (to cool the e, injection-water in the first case andato con- "dense the steam in the latter case) is supplied "to `the apparatus by thetnovement of the ves `sel to (which itisapplied) through the water by means of the ,chutesl or ,hoods patl y ented to me by Lettersl Patent of the United States bearing datefMarch, 1861, and its purpose is to accelerate the liow of cooling-` water through the tubesof the refrigerator `or condenser when the vessel is propelled at too ,low a rate of speed to supplythe proper amount of cooling-water to the tubes to proa duce their required effect.` It consists in attaching to and connecting with the outboard pipe ofthe apparatusa vane7 Ior propeller` wheel driven by the shaft, of the enl gine, or by `other desired means, ata proper rateyof speed, which shall "force outlthrough the outboard-pipe, `and necessarily introduce through the inboard or receiving pipe, a `larger sup ply ofthe external (or cooling) Water s than would e be forcedout or introduced into those pipes `(andthrough therefrigeratoror a condenser) by the motion of thevessel through l the water. y a l l o y My invention `is designed to remedy a de'- Ifect found to exist inwpractice with` the appal ratus abovenamed when supplied `with cool- `ing-water by theuseof the chute or hood steam exhausted from` non-condensing engines .the vessel and the delivery-pipe D of the case PATENT trice;

f `WiL AM A. 'LIGHTHALL or `NEW YORK; N. Y.

`,livel PRoveD Cl RCULATOR Fon STEAM-ENGINES. l Specification `forming part of Iiettcrs Patent No. 35,6115, dated June 17, H3621 above named when the vessel to which they are applied is propelled at too low a rate of speed to furnish to them a proper supply of cooling-water, which` state of things only ex# ists when the vessel is tied to adock, attached toa heavy tow, or laboring in a heavy sea, when she has no movement or where'her movement is less than the proper proportion l y due to the revolutionsand movement of the e engine'of the vessel. a

A' is the case or shell of a condenser or refrigeratr (to condense the steam exhausted from a non-condensing engine or to cool the injection-water of a condensing-engine to be reused) to which the external or cooling water is supplied from the outside of the vessel by and through the pipe B, and is taken od through the pipe C by means of openings in the side of the vessel covered by the chutes or hoods before named.

Between the deliverypipe G onthe side of A is placed the shell or case E,^which contains the vane or propeller wheel F, attached to the shaft G and worked by the pulley H, (either by a pulley placed and secured on the main shaft ofthe engine or by a separate moving power, as may be desired,) which is revolved and rotated at such a rate of speed in relation to the pitch of the propeller as to move in the water in the shell or case E at a greater rate of speed than that of the vessel-in other Words, that the pitch of the propeller F multiplied by the revolutions of the propeller shall move through or show a greater distance than the distance traveled by the vessel through the vwater-and also to move the water through the apparatus (t. e., the refrigerator or conf denser) in exact proportion to the revolutions of the engine, so that at Whatever speed the vessel may be moving by the motion of its en; gine the coolingwa'ter in the case E will be projected through the pipe C at a greater rate of speed, and consequently that it will enter and pass through the apparatus" at greater speed and in greater quantity, and therefore will produce a greater effect than if it were passed through it'by the movement of thevessel alone. i

a I prefer that the propeller F should be operated from the main shaft of the engine, for

the reason that its movement would then correspond eXactly with the movement of the engine. If the engine went ahead, the propeller would receive the cooling-water through the pipe B and project it outboard through the pipe C, and if the engine went back" the propeller would receive the Water through the pipe C to pass through the pipe B outboard, so that the movement of the water by the propeller should be increased by the movement of the vessel when the latter follows the former.

I do not confine myself to operating the propeller by the main shaft of the engine, as it will be apparent that the same effect can be WM. A. LIGHTHALL.

Witnesses: FRANCIS S. Low, JosEPH BISHOP. 

